CN1320279C - Closed type rotary compressor - Google Patents
Closed type rotary compressor Download PDFInfo
- Publication number
- CN1320279C CN1320279C CNB011442638A CN01144263A CN1320279C CN 1320279 C CN1320279 C CN 1320279C CN B011442638 A CNB011442638 A CN B011442638A CN 01144263 A CN01144263 A CN 01144263A CN 1320279 C CN1320279 C CN 1320279C
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- China
- Prior art keywords
- pump housing
- casing
- pump body
- supporting portion
- rotary compressor
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Abstract
The present invention relates to a closed rotary compressor which has the structure that a housing of the closed rotary compressor is in a cylinder shape, a pump body is arranged in the housing, the inside of the pump body forms a compression space with a compressing cooling medium, either the housing or a lower cover projects towards the central space of the housing in the radial direction of the housing so as to form a pump body supporting part, and the pump body supporting part contacts and supports the pump body; the pump body supporting part is connected with the pump body through a pump body fixing mechanism; the pump body fixing mechanism is provided with a bolt hole and a communicating hole; the pump body supporting part is provided with more than one bolt hole which penetrates through the board surface of the pump body supporting part, the communicating hole forms on the pump body, and the communicating hole is communicated with the bolt hole. The input power is reduced by repressing thermal deformation of the parts when the parts are assembled so as to enhance the compression efficiency and extend the service life of the compressor.
Description
Technical field
The present invention relates to compressor field.
Background technique
Closed rotary compressor has following structure: the inside of casing forms certain space; Compressor is arranged on the inside of casing, by the refrigerant of compressor compresses from the outside inflow of casing; Motor is arranged on the top of compressor, provides driving force by motor to compressor.
Fig. 1 expresses the sectional arrangement drawing of prior art closed rotary compressor.
As shown in Figure 1, the closed rotary compressor of prior art has following structure: the inside of casing 11 forms confined space; Compressor 21 is arranged on the bottom of casing 11, by the refrigerant of compressor 21 compressions from the outside inflow; Motor 51 is arranged on the top of compressor 21, provides driving force by motor 51 to compressor 21.
For the upper space and the lower space of sealing casing 11, loam cake (not showing among Fig. 1) and lower cover 15 are arranged respectively in the upper and lower of casing 11.
In addition, form the welding hole (not showing among Fig. 1) of the plate face of a plurality of perforation casings 11 on casing 11 and the pump housing 23 contacted positions, weld bond 115 is arranged on each welding hole, the pump housing and casing 11 are combined as a whole by welding weld bond 115.
Fig. 2 expresses the sectional arrangement drawing in prior art closed rotary compressor pump housing space.As shown in Figure 2, the closed rotary compressor of prior art has following structure: the pump housing 23 is arranged on casing 11 bottoms; The upper and lower of the pump housing 23 has upper bearing 30 and lower bearing 29 respectively.
Upper bearing 30 is made of flange part 132 and bearing 134.Flange part 132 is disc-shapes, and flange part 132 contacts with the top of the pump housing 23; Form outstanding bearing 134 in the central authorities of flange part 132 along the short transverse of flange part 132, in the bearing 134 axis hole is arranged, running shaft 57 is arranged in the axis hole of bearing 134.The external diameter of flange part 132 contacts with the aperture surface of casing 11; A plurality of welding holes (not showing in the drawing) are arranged on the casing 11, casing 11 and flange part 132 are combined as a whole by the welding welding hole.Weld bond 116 is arranged on the welding hole.
But the closed rotary compressor of prior art has following shortcoming.
As shown in Figure 1, for the pump housing 23 being fixed on the inside of casing 11, on the plate face of casing 11 a plurality of welding holes are arranged, the edge and the pump housing 23 by the welding welding hole can make the pump housing 23 be fixed on the inside of casing 11.But the heat that produces during welding makes the pump housing 23 and adjacent part produce thermal distortion.Because distortion increases input power, not only reduced the life-span that compression efficiency has also shortened compressor.
As shown in Figure 2,, on the plate face of casing 11, form a plurality of welding holes, by the welding welding hole flange part 132 of casing 11 and upper bearing 30 is mutually combined and be one for the aperture surface that makes upper bearing 30 and casing 11 contacts.But, because the thermal conductance that produces during welding causes the distortion of upper bearing 30, and parts such as the pump housing 23 and running shaft 57 can not be arranged on the specified position, the input power when causing driving increases and has reduced compression efficiency, and bring out inordinate wear and abnormal sound, cause shorten working life at last.
Summary of the invention
Technical problem to be solved by this invention is that a kind of closed rotary compressor with following effect is provided: by the distortion that suppresses parts input power is reduced during assembling, improve the compression efficiency of compressor and the working life of prolongation compressor.
In order to solve the problems of the technologies described above, the technological scheme that the present invention takes is: the radial direction along casing in lower cover protrudes formation pump housing supporting portion to the center of casing, and pump housing supporting portion contacts with the pump housing and supports the pump housing; By the pump housing fixed mechanism pump housing supporting portion is connected with the pump housing.
Described pump housing fixed mechanism has bolt hole and intercommunicating pore, has the bolt hole that runs through pump housing supporting portion plate face more than on the pump housing supporting portion at least, and intercommunicating pore is located on the pump housing, and intercommunicating pore is connected with bolt hole.
Described pump housing fixed mechanism also comprises fixing bolt and nut, and fixing bolt is arranged in the intercommunicating pore and bolt hole that is interconnected, and by fixing bolt the pump housing supporting portion and the pump housing is combined as a whole; Nut is fixed on the screw thread of fixing bolt.
Be stamped bottom surface and cylinder under described, the lower end mouth of bottom surface sealing casing; Form cylinder from the curved edge and the prolongation of bottom surface, cylinder is positioned at the inner peripheral surface of casing.
Weld at the position that coincides of the outer circumferential face of described lower cover and casing end, and casing and lower cover are connected as one.
Described pump housing supporting portion is from the end bent of the cylinder of described lower cover, protrudes to the center of casing along the radial direction of casing to form.
Described aperture surface from casing is formed with the pump housing supporting portion of protruding to the center along radial direction, pump housing supporting portion contacts at the upside of the pump housing and supports the pump housing, be formed with a plurality of bolts hole on each pump housing supporting portion, be inserted with fixing bolt in the bolt hole, the pump housing supporting portion and the pump housing be combined as a whole by fixing bolt and nut; Have on the pump housing and the corresponding a plurality of intercommunicating pores of bolt hole, in the intercommunicating pore fixing bolt can be set.
The invention has the beneficial effects as follows that closed rotary compressor of the present invention has following structure: the pump housing is arranged on the inside of casing; The pump housing contact of pump housing supporting portion; By the pump housing fixed structure pump housing supporting portion is connected with the pump housing.The beneficial effect of closed rotary compressor of the present invention is: the distortion of parts during by the inhibition assembling makes the reduction of input power improve compression efficiency and the working life that has prolonged compressor.
Description of drawings
Fig. 1 expresses the sectional arrangement drawing of prior art closed rotary compressor pump body structure.
Fig. 2 expresses the sectional arrangement drawing of prior art closed rotary compressor pump body structure.
Fig. 3 expresses the sectional arrangement drawing of first embodiment of the present invention closed rotary compressor.
Fig. 4 expresses the enlarged view of Fig. 3 major component.
Fig. 5 expresses the amplification view of Fig. 3 middle pump body.
Fig. 6 expresses the amplification view of lower cover among Fig. 3.
Fig. 7 expresses the sectional arrangement drawing of second embodiment of the present invention closed rotary compressor and Fig. 4 corresponding section.
In the drawings
11: casing 13. loam cakes 15. lower covers
16. bottom surface 17. cylinders, 21. compressors
23: the pump housing 25. runners 27 upper bearings
29. lower bearing 30. bearing part 32a. suction ports
32b. blade guiding groove 32c. exhaust port 33. screw holes
35. intercommunicating pore 37. fixing bolts 39. nuts
41. weld bond 43. pump housing supporting portions 44. bolts hole
51. motor 53. stators 55. rotors
57. running shaft 63. pump housing supporting portions 65. bolts hole
115. weld bond 116. weld bonds 130. upper bearings
132. flange part 134. shaft supporting parts
Embodiment
Fig. 3 expresses the sectional arrangement drawing about first embodiment of the present invention closed rotary compressor, and Fig. 4 expresses the enlarged view of major component among Fig. 3, and Fig. 5 expresses the amplification view of Fig. 3 middle pump body, and Fig. 6 expresses the amplification view of lower cover among Fig. 3.
As shown in the figure, closed rotary compressor of the present invention has following structure: the inside of casing 11 forms certain space; The lower cover 15 of the lower space that can seal casing 11 is arranged at the bottom of casing 11; The pump housing 23 is arranged on the inside of casing 11, and the inside of the pump housing 23 forms the compression volume of compression refrigerant; Pump housing supporting portion 43 is arranged on the lower cover 15, and the pump housing 23 is supported in pump housing supporting portion 43.
The pump housing 23 central authorities form the holding space of refrigerant, and the pump housing 23 1 sides have discoid suction port 32a, can suck refrigerant from the outside by suction port.The side of suction port 32a has blade guiding groove 32b, is provided with guide vane in the blade guiding groove 32b, and the outer diametric plane of guide vane and runner 25 contacts, and stretches in blade guiding groove 32b along the radial direction of the pump housing 23; The side of blade guiding groove 32b has exhaust port 32c, and the refrigerant after the compression is discharged to pump housing outside by exhaust port 32c; Hold refrigerant space around be formed with a plurality of bolts hole 33, bolt hole 33 connects upper bearings 27; Radial direction along the space that holds refrigerant has a plurality of intercommunicating pores 35, and intercommunicating pore 35 is connected with (back will illustrate) bolt hole on the pump housing supporting portion 43.
In addition, lower cover 15 has bottom surface 16 and cylinder 17.The lower space of bottom surface 16 sealing casings 11; 16 curved edge prolongs along peripheral direction and forms cylinder 17 in the bottom surface.
There is a plurality of pump housings supporting portion 43 upper end of cylinder 17, and pump housing supporting portion 43 is outstanding to the center along the radial direction of cylinder 17, keeps certain intervals between each pump housing supporting portion 43, edge of cylinder 17.Be formed with the bolt hole 44 of run-through board face on the pump housing supporting portion 43 respectively, bolt hole 44 is corresponding with the intercommunicating pore 35 of the pump housing 23.
Below, the closed rotary compressor with said structure is described.
The top of the pump housing 23 combines with upper bearing 27; For the intercommunicating pore 35 that makes the pump housing 23 and the bolt hole 44 of pump housing supporting portion 43 are interconnected, fixing bolt 37 is inserted in the intercommunicating pore 35 of the pump housing 23 and in the bolt hole 44 of pump housing supporting portion 43; Set screw nut 39 connects as one them in the screw portion of fixing bolt 37 then; The cylinder 17 of lower cover 15 is inserted the lower space of casing 11; The position that coincides at the cylinder 17 of the lower end of casing 11 and lower cover 15 is provided with weld bond 41; Weld along the edge direction of casing 11 afterwards.Because the pump housing 23 directly is not welded on the casing 11, reduced the welding heat distortion of the pump housing.
Fig. 7 expresses the sectional arrangement drawing of second embodiment of the present invention closed rotary compressor and Fig. 4 corresponding section.Omit at this with the detailed explanation that first embodiment exists together mutually.
As shown in Figure 7, closed rotary compressor of the present invention has following structure: the inside of casing 11 forms certain space; The upper space and the lower space of loam cake 13 and lower cover 15 sealing casings 11; The pump housing 23 is arranged on the inside of casing 11; Be formed with the pump housing supporting portion 63 of protruding along radial direction from the aperture surface of casing 11 to the center, pump housing supporting portion 63 contacts at the upside of the pump housing 23 and supports the pump housing 23, pump housing supporting portion 63 and pump housing supporting portion 43 both one of be connected two joint shape unanimities with the pump housing 23.
A plurality of pump housings supporting portion 63 that protrude along the oriented center of the radial direction of casing 11 bottom of casing 11, pump housing supporting portion 63 is connected with the pump housing 23; Be formed with a plurality of bolts hole 65 on each pump housing supporting portion 63, be inserted with fixing bolt 37 in the bolt hole 65, the pump housing supporting portion 63 and the pump housing 23 are combined as a whole by fixing bolt 37 and nut 39; Have on the pump housing 23 and bolt hole 65 corresponding a plurality of intercommunicating pores 35, in the intercommunicating pore 35 fixing bolt 37 can be set.
By said structure, fixing bolt 37 combines with bolt hole 65 on each pump housing supporting portion 63; In the intercommunicating pore 35 that fixing bolt 37 inserts on the pump housing 23, combine with the pump housing 23; Thread part and nut 39 by fixing bolt 37 combine, and pump housing supporting portion 63 and the pump housing 23 secure bond are integral.Then, the lower space of lower cover 15 sealing casings 11; On the outer diametric plane of the lower end of casing 11 and lower cover 15 weld bond 41 is arranged, be connected with lower cover 15 by the lower end of weld bond 41 with casing 11.Because upper bearing 30 directly is not welded on the casing 11, reduced the welding heat distortion of the pump housing.
Claims (6)
1. closed rotary compressor, comprise the stator (53) of casing (11), motor (51) and rotor (55), running shaft (57), the pump housing (23), runner (25), upper bearing (27), lower bearing (29), lower cover (15), it is characterized in that: the radial direction along casing (11) in lower cover (15) protrudes formation pump housing supporting portion (43) to the center of casing (11), and pump housing supporting portion (43) contact with the pump housing (23) and support the pump housing (23); By the pump housing fixed mechanism pump housing supporting portion (43) is connected with the pump housing (23).
2. according to the said closed rotary compressor of claim 1, it is characterized in that: pump housing fixed mechanism has bolt hole (44) and intercommunicating pore (35), has the bolt hole (44) that runs through pump housing supporting portion (43) plate face more than on the pump housing supporting portion (43) at least, intercommunicating pore (35) is located on the pump housing (23), and intercommunicating pore (35) is connected with bolt hole (44).
3. according to the said closed rotary compressor of claim 2, it is characterized in that: pump housing fixed mechanism also comprises fixing bolt (37) and nut (39), fixing bolt (37) is arranged in the intercommunicating pore (35) and bolt hole (43) that is interconnected, and by fixing bolt (37) pump housing supporting portion (43) and the pump housing (23) is combined as a whole; Nut (39) is fixed on the screw thread of fixing bolt (37).
4. according to the said closed rotary compressor of claim 1, it is characterized in that: lower cover (15) has bottom surface (16) and cylinder (17), the lower end mouth of bottom surface (15) sealing casings (11); The curved edge of (16) and prolongation form cylinder (17) from the bottom surface, and cylinder (17) is positioned at the inner peripheral surface of casing (11).
5. according to the said closed rotary compressor of claim 4, it is characterized in that: weld at the position that coincides of the outer circumferential face of lower cover (15) and casing (11) end, and casing (11) and lower cover (15) are connected as one.
6. according to the said closed rotary compressor of claim 4, it is characterized in that: pump housing supporting portion (43) from the end bent of the cylinder (17) of described lower cover (15), protrudes to the center of casing (11) along the radial direction of casing (11) to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011442638A CN1320279C (en) | 2001-12-17 | 2001-12-17 | Closed type rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011442638A CN1320279C (en) | 2001-12-17 | 2001-12-17 | Closed type rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1427168A CN1427168A (en) | 2003-07-02 |
| CN1320279C true CN1320279C (en) | 2007-06-06 |
Family
ID=4677432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011442638A Expired - Fee Related CN1320279C (en) | 2001-12-17 | 2001-12-17 | Closed type rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1320279C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772648B (en) * | 2007-07-25 | 2013-01-23 | 大金工业株式会社 | Enclosed compressor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4750551B2 (en) * | 2005-12-27 | 2011-08-17 | 三菱電機株式会社 | Method for manufacturing two-cylinder rotary hermetic compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106950A (en) * | 1984-11-13 | 1986-06-10 | 特库姆塞制品公司 | The main bearing of rotary compressor |
| CN88100326A (en) * | 1987-03-09 | 1988-09-21 | 三菱电机株式会社 | Hermetic rotary compressor |
| US5511389A (en) * | 1994-02-16 | 1996-04-30 | Carrier Corporation | Rotary compressor with liquid injection |
| CN1219650A (en) * | 1997-12-08 | 1999-06-16 | 运载器有限公司 | Motor bearing lubrication in rotary compressors |
-
2001
- 2001-12-17 CN CNB011442638A patent/CN1320279C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106950A (en) * | 1984-11-13 | 1986-06-10 | 特库姆塞制品公司 | The main bearing of rotary compressor |
| CN88100326A (en) * | 1987-03-09 | 1988-09-21 | 三菱电机株式会社 | Hermetic rotary compressor |
| US5511389A (en) * | 1994-02-16 | 1996-04-30 | Carrier Corporation | Rotary compressor with liquid injection |
| CN1219650A (en) * | 1997-12-08 | 1999-06-16 | 运载器有限公司 | Motor bearing lubrication in rotary compressors |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772648B (en) * | 2007-07-25 | 2013-01-23 | 大金工业株式会社 | Enclosed compressor |
| US8647086B2 (en) | 2007-07-25 | 2014-02-11 | Daikin Industries, Ltd. | Enclosed compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1427168A (en) | 2003-07-02 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |